Gas cooker flexible hose

[Graham.]

Is this a "self sealing" connector?

If I turn the knurled ring by hand will it disconnect safely?

[Tim+]

Yes. Push the hose up as you do it as it makes it a lot easier to turn the ring.

Of course if it’s not been disconnected for ages it might not self seal as well as intended. Ideally you should do a leak test with a manometer whenever a connecting is broken and remade.

Tim

[GB]

How long are you planning to disconnect for, and do you (the OP) have a manometer?

If in doubt, fit a blanking plug, and test for leaks with soap water.